Vectorization nautical chart drawing method and device and electronic equipment

The invention discloses a vectorization nautical chart drawing method and device and electronic equipment. The method comprises the steps that a target character sequence image of a grid nautical chart is segmented into a plurality of sub-images, the size information and the grid coordinate position of each sub-image are determined, the target character sequence image is an image area containing a target character sequence, and the target character sequence is used for representing a target water depth point in the grid nautical chart; each sub-image comprises a character in the target character sequence; determining a numerical value type of the target character sequence based on the respective size information of the plurality of sub-images; determining a water depth value of the target water depth point based on the numerical value type, the template digital image corresponding to the plurality of digits and the plurality of sub-images; determining the geographic coordinate position of the target water dep